# Which public FFV1/Matroska conformance sample files exist (MediaConch_SampleFiles, FFmpeg samples), and what terms do they state?

- id: art_01M5MZ0MW2CXJ6A1QHTZ1XTAPS
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T10, T20 · tags: none
- updated: 2026-10-23T18:05:20.122Z
- url: https://veyrul.com/articles/art_01M5MZ0MW2CXJ6A1QHTZ1XTAPS

Scope: describes an unresolved rights status; it does not clear the component's rights or permit redistribution. Two widely used FFV1/LPCM sample sets state no reuse licence. MediaArea's MediaConch_SampleFiles (commit 647bb33d; 1105 files, about 902 MB) has no licence file and its README states no terms; its Legacy FFV1 files are documented as synthetic ffmpeg testsrc output, but its LPCM 'Weather Report' recordings have no stated source. samples.ffmpeg.org allows downloading individual samples and asks for contact before bulk download, which is permission to download, not a licence to redistribute or publish. Treat both as rights-held for anything beyond local testing.

Scope: describes an unresolved rights status; it does not clear the component's rights or permit redistribution. Two widely used FFV1/LPCM sample sets state no reuse licence. MediaArea's MediaConch_SampleFiles (commit 647bb33d; 1105 files, about 902 MB) has no licence file and its README states no terms; its Legacy FFV1 files are documented as synthetic ffmpeg testsrc output, but its LPCM 'Weather Report' recordings have no stated source. samples.ffmpeg.org allows downloading individual samples and asks for contact before bulk download, which is permission to download, not a licence to redistribute or publish. Treat both as rights-held for anything beyond local testing.

Curator qualifications: Repository metadata and READMEs read 2026-10-22; no sample files downloaded. samples.ffmpeg.org avi/ffv1 testset count (384) and FFV1 spec repo entry count not recounted. No CELLAR conformance repository located (producer search). Qualified rendering authorised by L00 REPRESENTATION-DECISIONS-01 (sha256 1ff78e6b...); not additional evidence; no execution or independent review claimed.

Limitations: Repository metadata and READMEs read 2026-10-22; no sample files downloaded.

Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

```json
{
  "citations": [
    {
      "url": "https://github.com/MediaArea/MediaConch_SampleFiles/tree/647bb33d7887b8aaec7dd5b5110e8c96a4491226",
      "note": "GitHub git trees API MediaConch_SampleFiles @647bb33d (recursive, not truncated); GitHub API repos/MediaArea/MediaConch_SampleFiles/license; MediaConch_SampleFiles README.md @647bb33d; Legacy/FFV1/README.md; Legacy/LPCM/README.md; samples.ffmpeg.org/00-README"
    },
    {
      "url": "https://github.com/MediaArea/MediaConch_SampleFiles/blob/647bb33d7887b8aaec7dd5b5110e8c96a4491226/README.md",
      "note": "GitHub git trees API MediaConch_SampleFiles @647bb33d (recursive, not truncated); GitHub API repos/MediaArea/MediaConch_SampleFiles/license; MediaConch_SampleFiles README.md @647bb33d; Legacy/FFV1/README.md; Legacy/LPCM/README.md; samples.ffmpeg.org/00-README"
    },
    {
      "url": "https://github.com/MediaArea/MediaConch_SampleFiles/blob/647bb33d7887b8aaec7dd5b5110e8c96a4491226/Legacy/FFV1/README.md",
      "note": "GitHub git trees API MediaConch_SampleFiles @647bb33d (recursive, not truncated); GitHub API repos/MediaArea/MediaConch_SampleFiles/license; MediaConch_SampleFiles README.md @647bb33d; Legacy/FFV1/README.md; Legacy/LPCM/README.md; samples.ffmpeg.org/00-README"
    },
    {
      "url": "https://samples.ffmpeg.org/00-README",
      "note": "GitHub git trees API MediaConch_SampleFiles @647bb33d (recursive, not truncated); GitHub API repos/MediaArea/MediaConch_SampleFiles/license; MediaConch_SampleFiles README.md @647bb33d; Legacy/FFV1/README.md; Legacy/LPCM/README.md; samples.ffmpeg.org/00-README"
    },
    {
      "url": "https://samples.ffmpeg.org/allsamples.txt",
      "note": "GitHub git trees API MediaConch_SampleFiles @647bb33d (recursive, not truncated); GitHub API repos/MediaArea/MediaConch_SampleFiles/license; MediaConch_SampleFiles README.md @647bb33d; Legacy/FFV1/README.md; Legacy/LPCM/README.md; samples.ffmpeg.org/00-README"
    },
    {
      "url": "https://github.com/FFmpeg/FFV1/tree/4067d79bf9bde66175a5668be62824dc191a6384",
      "note": "GitHub git trees API MediaConch_SampleFiles @647bb33d (recursive, not truncated); GitHub API repos/MediaArea/MediaConch_SampleFiles/license; MediaConch_SampleFiles README.md @647bb33d; Legacy/FFV1/README.md; Legacy/LPCM/README.md; samples.ffmpeg.org/00-README"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] Scope: describes an unresolved rights status; it does not clear the component's rights or permit redistribution. Two widely used FFV1/LPCM sample sets state no reuse licence. MediaArea's MediaConch_SampleFiles (commit 647bb33d; 1105 files, about 902 MB) has no licence file and its README states no terms; its Legacy FFV1 files are documented as synthetic ffmpeg testsrc output, but its LPCM 'Weather Report' recordings have no stated source. samples.ffmpeg.org allows downloading individual samples and asks for contact before bulk download, which is permission to download, not a licence to redistribute or publish. Treat both as rights-held for anything beyond local testing. · locator: GitHub git trees API MediaConch_SampleFiles @647bb33d (recursive, not truncated); GitHub API repos/MediaArea/MediaConch_SampleFiles/license; MediaConch_SampleFiles README.md @647bb33d; Legacy/FFV1/README.md; Legacy/LPCM/README.md; samples.ffmpeg.org/00-README · source: https://github.com/MediaArea/MediaConch_SampleFiles/tree/647bb33d7887b8aaec7dd5b5110e8c96a4491226

Rights:
- documentation: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Applies to this original summary only, not to the cited sources.

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